./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:09:12,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:09:12,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:09:12,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:09:12,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:09:12,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:09:12,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:09:12,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:09:12,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:09:12,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:09:12,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:09:12,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:09:12,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:09:12,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:09:12,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:09:12,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:09:12,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:09:12,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:09:12,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:09:12,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:09:12,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:09:12,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:09:12,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:09:12,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:09:12,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:09:12,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:09:12,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:09:12,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:09:12,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:09:12,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:09:12,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:09:12,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:09:12,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:09:12,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:09:12,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:09:12,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:09:12,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:09:12,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:09:12,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:09:12,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:09:12,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:09:12,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:09:12,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:09:12,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:09:12,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:09:12,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:09:12,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:09:12,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:09:12,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:09:12,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:09:12,859 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:09:12,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:09:12,859 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:09:12,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:09:12,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:09:12,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:09:12,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:09:12,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:09:12,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:09:12,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:09:12,869 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:09:12,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:09:12,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:09:12,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:09:12,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:09:12,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:09:12,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:09:12,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:09:12,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:12,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:09:12,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:09:12,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:09:12,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:09:12,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:09:12,872 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:09:12,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:09:12,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:09:12,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-20 12:09:13,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:09:13,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:09:13,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:09:13,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:09:13,183 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:09:13,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:09:16,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:09:16,805 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:09:16,805 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:09:16,828 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/data/f96940747/d280593c154e4af6a42aae438552cf42/FLAG6eab3bf17 [2022-11-20 12:09:16,850 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/data/f96940747/d280593c154e4af6a42aae438552cf42 [2022-11-20 12:09:16,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:09:16,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:09:16,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:16,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:09:16,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:09:16,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:16" (1/1) ... [2022-11-20 12:09:16,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313a4fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:16, skipping insertion in model container [2022-11-20 12:09:16,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:16" (1/1) ... [2022-11-20 12:09:16,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:09:16,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:09:17,446 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-20 12:09:17,460 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,462 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,464 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,465 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:17,535 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:09:17,575 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-20 12:09:17,578 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,583 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,584 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,585 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:09:17,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:17,675 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:09:17,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17 WrapperNode [2022-11-20 12:09:17,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:17,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:17,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:09:17,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:09:17,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,766 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-20 12:09:17,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:17,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:09:17,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:09:17,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:09:17,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:09:17,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:09:17,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:09:17,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:09:17,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (1/1) ... [2022-11-20 12:09:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:17,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:17,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:09:17,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:09:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:09:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:09:17,916 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:09:18,061 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:09:18,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:09:18,594 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:09:18,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:09:18,604 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 12:09:18,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:18 BoogieIcfgContainer [2022-11-20 12:09:18,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:09:18,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:09:18,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:09:18,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:09:18,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:09:16" (1/3) ... [2022-11-20 12:09:18,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4837c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:18, skipping insertion in model container [2022-11-20 12:09:18,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:17" (2/3) ... [2022-11-20 12:09:18,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4837c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:18, skipping insertion in model container [2022-11-20 12:09:18,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:18" (3/3) ... [2022-11-20 12:09:18,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:09:18,625 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:09:18,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:09:18,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 12:09:18,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:09:18,718 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:09:18,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 229 transitions, 466 flow [2022-11-20 12:09:18,871 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-20 12:09:18,871 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 12:09:18,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 698 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-11-20 12:09:18,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 229 transitions, 466 flow [2022-11-20 12:09:18,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 460 flow [2022-11-20 12:09:18,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:09:18,922 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e72463c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:09:18,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 12:09:18,937 INFO L130 PetriNetUnfolder]: 4/65 cut-off events. [2022-11-20 12:09:18,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:09:18,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:18,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:18,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash 509946427, now seen corresponding path program 1 times [2022-11-20 12:09:18,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125493512] [2022-11-20 12:09:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:19,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347327039] [2022-11-20 12:09:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:19,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:19,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:09:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:19,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:19,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:19,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:19,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125493512] [2022-11-20 12:09:19,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347327039] [2022-11-20 12:09:19,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347327039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:19,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:19,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:09:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200964488] [2022-11-20 12:09:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:19,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:19,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 229 [2022-11-20 12:09:19,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 226 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:19,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:19,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 229 [2022-11-20 12:09:19,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:19,567 INFO L130 PetriNetUnfolder]: 6/282 cut-off events. [2022-11-20 12:09:19,567 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 12:09:19,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 282 events. 6/282 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 817 event pairs, 0 based on Foata normal form. 20/271 useless extension candidates. Maximal degree in co-relation 188. Up to 17 conditions per place. [2022-11-20 12:09:19,572 INFO L137 encePairwiseOnDemand]: 206/229 looper letters, 23 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2022-11-20 12:09:19,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 216 transitions, 490 flow [2022-11-20 12:09:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:09:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2022-11-20 12:09:19,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170305676855895 [2022-11-20 12:09:19,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2022-11-20 12:09:19,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2022-11-20 12:09:19,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:19,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2022-11-20 12:09:19,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:19,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:19,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:19,637 INFO L175 Difference]: Start difference. First operand has 206 places, 226 transitions, 460 flow. Second operand 3 states and 630 transitions. [2022-11-20 12:09:19,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 216 transitions, 490 flow [2022-11-20 12:09:19,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 216 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:09:19,646 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 438 flow [2022-11-20 12:09:19,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-11-20 12:09:19,652 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 2 predicate places. [2022-11-20 12:09:19,652 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 438 flow [2022-11-20 12:09:19,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:19,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:19,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:19,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 12:09:19,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1371530627, now seen corresponding path program 1 times [2022-11-20 12:09:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958302585] [2022-11-20 12:09:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:20,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958302585] [2022-11-20 12:09:20,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958302585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:20,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:20,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119047991] [2022-11-20 12:09:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:20,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:20,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 229 [2022-11-20 12:09:20,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:20,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 229 [2022-11-20 12:09:20,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:20,206 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-20 12:09:20,207 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:09:20,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 366 events. 6/366 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 287. Up to 22 conditions per place. [2022-11-20 12:09:20,209 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 17 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2022-11-20 12:09:20,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 214 transitions, 488 flow [2022-11-20 12:09:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:09:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-20 12:09:20,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8922852983988355 [2022-11-20 12:09:20,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-20 12:09:20,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-20 12:09:20,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:20,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-20 12:09:20,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,219 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 438 flow. Second operand 3 states and 613 transitions. [2022-11-20 12:09:20,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 214 transitions, 488 flow [2022-11-20 12:09:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 214 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:09:20,225 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 452 flow [2022-11-20 12:09:20,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2022-11-20 12:09:20,227 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 4 predicate places. [2022-11-20 12:09:20,227 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 452 flow [2022-11-20 12:09:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:20,228 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:09:20,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash -835305235, now seen corresponding path program 1 times [2022-11-20 12:09:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:20,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006233734] [2022-11-20 12:09:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:20,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:20,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841476996] [2022-11-20 12:09:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:20,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:20,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:20,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:20,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:09:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:20,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:20,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:20,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:20,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006233734] [2022-11-20 12:09:20,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:20,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841476996] [2022-11-20 12:09:20,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841476996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:20,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:20,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093988853] [2022-11-20 12:09:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:20,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:20,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:20,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:20,816 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-20 12:09:20,816 INFO L131 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2022-11-20 12:09:20,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 366 events. 6/366 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 805 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 316. Up to 30 conditions per place. [2022-11-20 12:09:20,819 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 23 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2022-11-20 12:09:20,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 218 transitions, 526 flow [2022-11-20 12:09:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:09:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:09:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 989 transitions. [2022-11-20 12:09:20,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637554585152838 [2022-11-20 12:09:20,824 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 989 transitions. [2022-11-20 12:09:20,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 989 transitions. [2022-11-20 12:09:20,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:20,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 989 transitions. [2022-11-20 12:09:20,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,832 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 452 flow. Second operand 5 states and 989 transitions. [2022-11-20 12:09:20,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 218 transitions, 526 flow [2022-11-20 12:09:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:09:20,839 INFO L231 Difference]: Finished difference. Result has 217 places, 212 transitions, 484 flow [2022-11-20 12:09:20,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=217, PETRI_TRANSITIONS=212} [2022-11-20 12:09:20,842 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-20 12:09:20,842 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 212 transitions, 484 flow [2022-11-20 12:09:20,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:20,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:20,844 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:20,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:21,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash -124658094, now seen corresponding path program 1 times [2022-11-20 12:09:21,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:21,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807063071] [2022-11-20 12:09:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:21,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:21,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:21,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600800295] [2022-11-20 12:09:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:21,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:21,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:21,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:21,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:09:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:21,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:21,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807063071] [2022-11-20 12:09:21,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:21,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600800295] [2022-11-20 12:09:21,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600800295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:21,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:21,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983759221] [2022-11-20 12:09:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:21,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:21,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:21,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:21,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 212 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:21,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:21,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:21,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:21,465 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-20 12:09:21,465 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-11-20 12:09:21,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 362 events. 6/362 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 795 event pairs, 0 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 328. Up to 28 conditions per place. [2022-11-20 12:09:21,468 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 16 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-20 12:09:21,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 524 flow [2022-11-20 12:09:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:09:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:09:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2022-11-20 12:09:21,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591703056768559 [2022-11-20 12:09:21,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2022-11-20 12:09:21,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2022-11-20 12:09:21,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:21,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2022-11-20 12:09:21,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:21,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:21,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:21,479 INFO L175 Difference]: Start difference. First operand has 217 places, 212 transitions, 484 flow. Second operand 4 states and 787 transitions. [2022-11-20 12:09:21,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 524 flow [2022-11-20 12:09:21,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:09:21,485 INFO L231 Difference]: Finished difference. Result has 217 places, 211 transitions, 486 flow [2022-11-20 12:09:21,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=217, PETRI_TRANSITIONS=211} [2022-11-20 12:09:21,487 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-20 12:09:21,487 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 211 transitions, 486 flow [2022-11-20 12:09:21,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:21,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:21,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:21,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:21,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 872330855, now seen corresponding path program 1 times [2022-11-20 12:09:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:21,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299019239] [2022-11-20 12:09:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:21,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:21,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990742903] [2022-11-20 12:09:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:21,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:21,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:21,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:09:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:21,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:09:21,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:22,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:22,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299019239] [2022-11-20 12:09:22,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990742903] [2022-11-20 12:09:22,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990742903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:22,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:22,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:09:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841642391] [2022-11-20 12:09:22,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:09:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:09:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:09:22,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:22,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 211 transitions, 486 flow. Second operand has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:22,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:22,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:22,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:22,290 INFO L130 PetriNetUnfolder]: 6/448 cut-off events. [2022-11-20 12:09:22,290 INFO L131 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-11-20 12:09:22,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 448 events. 6/448 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 540 event pairs, 0 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 455. Up to 22 conditions per place. [2022-11-20 12:09:22,292 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 29 selfloop transitions, 10 changer transitions 0/229 dead transitions. [2022-11-20 12:09:22,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 229 transitions, 618 flow [2022-11-20 12:09:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:09:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:09:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1769 transitions. [2022-11-20 12:09:22,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8583212032993692 [2022-11-20 12:09:22,298 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1769 transitions. [2022-11-20 12:09:22,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1769 transitions. [2022-11-20 12:09:22,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:22,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1769 transitions. [2022-11-20 12:09:22,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 196.55555555555554) internal successors, (1769), 9 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:22,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:22,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:22,311 INFO L175 Difference]: Start difference. First operand has 217 places, 211 transitions, 486 flow. Second operand 9 states and 1769 transitions. [2022-11-20 12:09:22,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 229 transitions, 618 flow [2022-11-20 12:09:22,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:09:22,318 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 536 flow [2022-11-20 12:09:22,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=536, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2022-11-20 12:09:22,319 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 22 predicate places. [2022-11-20 12:09:22,320 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 536 flow [2022-11-20 12:09:22,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:22,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:22,321 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:22,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:22,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash 884541869, now seen corresponding path program 1 times [2022-11-20 12:09:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795192577] [2022-11-20 12:09:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:22,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546394490] [2022-11-20 12:09:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:22,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:22,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:22,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:22,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:09:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:22,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:09:22,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:23,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:23,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795192577] [2022-11-20 12:09:23,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:23,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546394490] [2022-11-20 12:09:23,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546394490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:23,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:23,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:09:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195701823] [2022-11-20 12:09:23,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:09:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:09:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:09:23,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:23,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:23,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:23,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:23,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:23,639 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-20 12:09:23,639 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-20 12:09:23,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1513 event pairs, 0 based on Foata normal form. 4/650 useless extension candidates. Maximal degree in co-relation 665. Up to 19 conditions per place. [2022-11-20 12:09:23,644 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 37 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2022-11-20 12:09:23,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 752 flow [2022-11-20 12:09:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:09:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:09:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2935 transitions. [2022-11-20 12:09:23,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8544395924308588 [2022-11-20 12:09:23,655 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2935 transitions. [2022-11-20 12:09:23,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2935 transitions. [2022-11-20 12:09:23,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:23,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2935 transitions. [2022-11-20 12:09:23,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:23,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:23,673 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:23,673 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 536 flow. Second operand 15 states and 2935 transitions. [2022-11-20 12:09:23,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 752 flow [2022-11-20 12:09:23,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 243 transitions, 734 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 12:09:23,680 INFO L231 Difference]: Finished difference. Result has 237 places, 219 transitions, 585 flow [2022-11-20 12:09:23,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=585, PETRI_PLACES=237, PETRI_TRANSITIONS=219} [2022-11-20 12:09:23,681 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 31 predicate places. [2022-11-20 12:09:23,681 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 219 transitions, 585 flow [2022-11-20 12:09:23,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:23,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:23,683 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:23,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:23,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1141379289, now seen corresponding path program 2 times [2022-11-20 12:09:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346240309] [2022-11-20 12:09:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:23,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:23,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103813451] [2022-11-20 12:09:23,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:09:23,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:23,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:23,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:09:24,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:09:24,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:09:24,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:24,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 12:09:24,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346240309] [2022-11-20 12:09:24,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103813451] [2022-11-20 12:09:24,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103813451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:24,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109779302] [2022-11-20 12:09:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:24,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-20 12:09:24,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 219 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:24,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:24,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-20 12:09:24,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:24,548 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-20 12:09:24,549 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-20 12:09:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1506 event pairs, 0 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 671. Up to 50 conditions per place. [2022-11-20 12:09:24,552 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 29 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2022-11-20 12:09:24,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 231 transitions, 677 flow [2022-11-20 12:09:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:09:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:09:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 980 transitions. [2022-11-20 12:09:24,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8558951965065502 [2022-11-20 12:09:24,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 980 transitions. [2022-11-20 12:09:24,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 980 transitions. [2022-11-20 12:09:24,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:24,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 980 transitions. [2022-11-20 12:09:24,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:24,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:24,561 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:24,561 INFO L175 Difference]: Start difference. First operand has 237 places, 219 transitions, 585 flow. Second operand 5 states and 980 transitions. [2022-11-20 12:09:24,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 231 transitions, 677 flow [2022-11-20 12:09:24,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 618 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 12:09:24,568 INFO L231 Difference]: Finished difference. Result has 232 places, 222 transitions, 560 flow [2022-11-20 12:09:24,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=232, PETRI_TRANSITIONS=222} [2022-11-20 12:09:24,569 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 26 predicate places. [2022-11-20 12:09:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 222 transitions, 560 flow [2022-11-20 12:09:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:24,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:24,570 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:24,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:24,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1023019082, now seen corresponding path program 1 times [2022-11-20 12:09:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:24,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874315733] [2022-11-20 12:09:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:24,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:24,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976840298] [2022-11-20 12:09:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:24,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:24,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:09:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:09:25,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:25,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874315733] [2022-11-20 12:09:25,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976840298] [2022-11-20 12:09:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976840298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:25,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:25,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:09:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048381676] [2022-11-20 12:09:25,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:09:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:09:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:09:25,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:25,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 222 transitions, 560 flow. Second operand has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:25,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:25,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:25,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:26,160 INFO L130 PetriNetUnfolder]: 6/782 cut-off events. [2022-11-20 12:09:26,161 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-20 12:09:26,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 782 events. 6/782 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 565 event pairs, 0 based on Foata normal form. 8/772 useless extension candidates. Maximal degree in co-relation 957. Up to 20 conditions per place. [2022-11-20 12:09:26,164 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 60 selfloop transitions, 22 changer transitions 0/275 dead transitions. [2022-11-20 12:09:26,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 275 transitions, 917 flow [2022-11-20 12:09:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:09:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:09:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4117 transitions. [2022-11-20 12:09:26,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561031399459347 [2022-11-20 12:09:26,173 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4117 transitions. [2022-11-20 12:09:26,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4117 transitions. [2022-11-20 12:09:26,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:26,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4117 transitions. [2022-11-20 12:09:26,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 196.04761904761904) internal successors, (4117), 21 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:26,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:26,213 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:26,214 INFO L175 Difference]: Start difference. First operand has 232 places, 222 transitions, 560 flow. Second operand 21 states and 4117 transitions. [2022-11-20 12:09:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 275 transitions, 917 flow [2022-11-20 12:09:26,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 275 transitions, 907 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 12:09:26,220 INFO L231 Difference]: Finished difference. Result has 256 places, 231 transitions, 670 flow [2022-11-20 12:09:26,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=670, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-11-20 12:09:26,224 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 50 predicate places. [2022-11-20 12:09:26,224 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 670 flow [2022-11-20 12:09:26,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:26,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:26,227 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:26,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:09:26,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1086077386, now seen corresponding path program 2 times [2022-11-20 12:09:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:26,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132653006] [2022-11-20 12:09:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:26,527 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:26,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283651638] [2022-11-20 12:09:26,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:09:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:26,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:26,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:09:26,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:09:26,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:09:26,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:26,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 12:09:27,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132653006] [2022-11-20 12:09:27,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283651638] [2022-11-20 12:09:27,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283651638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:27,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:27,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170192756] [2022-11-20 12:09:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:27,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:27,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-20 12:09:27,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:27,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:27,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-20 12:09:27,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:27,561 INFO L130 PetriNetUnfolder]: 6/780 cut-off events. [2022-11-20 12:09:27,561 INFO L131 PetriNetUnfolder]: For 182/183 co-relation queries the response was YES. [2022-11-20 12:09:27,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 780 events. 6/780 cut-off events. For 182/183 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 558 event pairs, 0 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 958. Up to 80 conditions per place. [2022-11-20 12:09:27,564 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 18 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-20 12:09:27,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 229 transitions, 706 flow [2022-11-20 12:09:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:09:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:09:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-20 12:09:27,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482532751091703 [2022-11-20 12:09:27,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-20 12:09:27,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-20 12:09:27,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:27,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-20 12:09:27,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:27,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:27,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:27,573 INFO L175 Difference]: Start difference. First operand has 256 places, 231 transitions, 670 flow. Second operand 4 states and 777 transitions. [2022-11-20 12:09:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 229 transitions, 706 flow [2022-11-20 12:09:27,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 229 transitions, 683 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 12:09:27,579 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 647 flow [2022-11-20 12:09:27,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=647, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2022-11-20 12:09:27,581 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 41 predicate places. [2022-11-20 12:09:27,581 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 647 flow [2022-11-20 12:09:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:27,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:27,582 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:27,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:27,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 12:09:27,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash -838323066, now seen corresponding path program 1 times [2022-11-20 12:09:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:27,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955378900] [2022-11-20 12:09:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:27,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:27,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687704124] [2022-11-20 12:09:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:27,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:27,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:09:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:28,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:09:28,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:29,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:29,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955378900] [2022-11-20 12:09:29,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:29,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687704124] [2022-11-20 12:09:29,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687704124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:29,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:29,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 12:09:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705261306] [2022-11-20 12:09:29,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:09:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:09:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:09:29,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:29,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 647 flow. Second operand has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:29,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:29,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:29,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:31,240 INFO L130 PetriNetUnfolder]: 6/1452 cut-off events. [2022-11-20 12:09:31,241 INFO L131 PetriNetUnfolder]: For 730/731 co-relation queries the response was YES. [2022-11-20 12:09:31,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 1452 events. 6/1452 cut-off events. For 730/731 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 598 event pairs, 0 based on Foata normal form. 16/1450 useless extension candidates. Maximal degree in co-relation 2072. Up to 38 conditions per place. [2022-11-20 12:09:31,246 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 124 selfloop transitions, 46 changer transitions 0/361 dead transitions. [2022-11-20 12:09:31,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 361 transitions, 1583 flow [2022-11-20 12:09:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:09:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:09:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8817 transitions. [2022-11-20 12:09:31,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855604075691412 [2022-11-20 12:09:31,268 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8817 transitions. [2022-11-20 12:09:31,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8817 transitions. [2022-11-20 12:09:31,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:31,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8817 transitions. [2022-11-20 12:09:31,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 195.93333333333334) internal successors, (8817), 45 states have internal predecessors, (8817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:31,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:31,310 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:31,310 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 647 flow. Second operand 45 states and 8817 transitions. [2022-11-20 12:09:31,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 361 transitions, 1583 flow [2022-11-20 12:09:31,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 361 transitions, 1573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:09:31,322 INFO L231 Difference]: Finished difference. Result has 297 places, 254 transitions, 960 flow [2022-11-20 12:09:31,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=960, PETRI_PLACES=297, PETRI_TRANSITIONS=254} [2022-11-20 12:09:31,324 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 91 predicate places. [2022-11-20 12:09:31,324 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 254 transitions, 960 flow [2022-11-20 12:09:31,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:31,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:31,327 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:31,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:09:31,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1748324742, now seen corresponding path program 2 times [2022-11-20 12:09:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:31,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854207341] [2022-11-20 12:09:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:31,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:31,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356122131] [2022-11-20 12:09:31,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:09:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:31,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:31,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:31,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:09:32,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:09:32,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:09:32,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:32,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-20 12:09:32,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854207341] [2022-11-20 12:09:32,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356122131] [2022-11-20 12:09:32,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356122131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:32,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:32,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823166803] [2022-11-20 12:09:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:32,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-20 12:09:32,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 254 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:32,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:32,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-20 12:09:32,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:32,711 INFO L130 PetriNetUnfolder]: 6/1440 cut-off events. [2022-11-20 12:09:32,711 INFO L131 PetriNetUnfolder]: For 732/742 co-relation queries the response was YES. [2022-11-20 12:09:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 1440 events. 6/1440 cut-off events. For 732/742 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 537 event pairs, 0 based on Foata normal form. 3/1428 useless extension candidates. Maximal degree in co-relation 1901. Up to 38 conditions per place. [2022-11-20 12:09:32,716 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 11 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-20 12:09:32,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 255 transitions, 992 flow [2022-11-20 12:09:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:09:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:09:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2022-11-20 12:09:32,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707423580786027 [2022-11-20 12:09:32,719 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2022-11-20 12:09:32,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2022-11-20 12:09:32,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:32,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2022-11-20 12:09:32,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:32,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:32,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:32,724 INFO L175 Difference]: Start difference. First operand has 297 places, 254 transitions, 960 flow. Second operand 5 states and 997 transitions. [2022-11-20 12:09:32,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 255 transitions, 992 flow [2022-11-20 12:09:32,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 935 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 12:09:32,734 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 913 flow [2022-11-20 12:09:32,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=913, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2022-11-20 12:09:32,735 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 77 predicate places. [2022-11-20 12:09:32,736 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 913 flow [2022-11-20 12:09:32,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:32,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:32,737 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:32,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:09:32,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1636507381, now seen corresponding path program 1 times [2022-11-20 12:09:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520175314] [2022-11-20 12:09:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:33,055 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:33,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693764470] [2022-11-20 12:09:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:33,057 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:09:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:09:34,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:35,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520175314] [2022-11-20 12:09:37,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693764470] [2022-11-20 12:09:37,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693764470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:37,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:37,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 12:09:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483997306] [2022-11-20 12:09:37,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 12:09:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 12:09:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 12:09:37,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-20 12:09:37,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 913 flow. Second operand has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:37,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:37,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-20 12:09:37,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:41,417 INFO L130 PetriNetUnfolder]: 6/2700 cut-off events. [2022-11-20 12:09:41,418 INFO L131 PetriNetUnfolder]: For 4949/4950 co-relation queries the response was YES. [2022-11-20 12:09:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 2700 events. 6/2700 cut-off events. For 4949/4950 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 614 event pairs, 0 based on Foata normal form. 30/2716 useless extension candidates. Maximal degree in co-relation 4307. Up to 96 conditions per place. [2022-11-20 12:09:41,428 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 244 selfloop transitions, 91 changer transitions 0/525 dead transitions. [2022-11-20 12:09:41,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 525 transitions, 2995 flow [2022-11-20 12:09:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 12:09:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 12:09:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17629 transitions. [2022-11-20 12:09:41,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85536147501213 [2022-11-20 12:09:41,456 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17629 transitions. [2022-11-20 12:09:41,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17629 transitions. [2022-11-20 12:09:41,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:41,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17629 transitions. [2022-11-20 12:09:41,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 195.87777777777777) internal successors, (17629), 90 states have internal predecessors, (17629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:41,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:41,530 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:41,530 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 913 flow. Second operand 90 states and 17629 transitions. [2022-11-20 12:09:41,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 525 transitions, 2995 flow [2022-11-20 12:09:41,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 525 transitions, 2987 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:09:41,552 INFO L231 Difference]: Finished difference. Result has 384 places, 299 transitions, 1594 flow [2022-11-20 12:09:41,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1594, PETRI_PLACES=384, PETRI_TRANSITIONS=299} [2022-11-20 12:09:41,553 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 178 predicate places. [2022-11-20 12:09:41,554 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 299 transitions, 1594 flow [2022-11-20 12:09:41,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:41,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:41,558 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:41,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:41,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:41,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash -10850143, now seen corresponding path program 2 times [2022-11-20 12:09:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:41,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710156262] [2022-11-20 12:09:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:41,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:41,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104263539] [2022-11-20 12:09:41,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:09:41,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:41,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:41,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:09:42,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:09:42,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:09:42,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:42,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-20 12:09:42,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:42,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710156262] [2022-11-20 12:09:42,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104263539] [2022-11-20 12:09:42,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104263539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:42,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:42,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:42,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917795587] [2022-11-20 12:09:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:42,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:09:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:09:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:09:42,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-20 12:09:42,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 299 transitions, 1594 flow. Second operand has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:42,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-20 12:09:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:44,460 INFO L130 PetriNetUnfolder]: 6/2699 cut-off events. [2022-11-20 12:09:44,461 INFO L131 PetriNetUnfolder]: For 2959/2968 co-relation queries the response was YES. [2022-11-20 12:09:44,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 2699 events. 6/2699 cut-off events. For 2959/2968 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 609 event pairs, 0 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 3983. Up to 96 conditions per place. [2022-11-20 12:09:44,475 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 9 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-20 12:09:44,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 298 transitions, 1616 flow [2022-11-20 12:09:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:09:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:09:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 797 transitions. [2022-11-20 12:09:44,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8700873362445415 [2022-11-20 12:09:44,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 797 transitions. [2022-11-20 12:09:44,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 797 transitions. [2022-11-20 12:09:44,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:44,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 797 transitions. [2022-11-20 12:09:44,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,484 INFO L175 Difference]: Start difference. First operand has 384 places, 299 transitions, 1594 flow. Second operand 4 states and 797 transitions. [2022-11-20 12:09:44,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 298 transitions, 1616 flow [2022-11-20 12:09:44,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 298 transitions, 1497 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 12:09:44,518 INFO L231 Difference]: Finished difference. Result has 344 places, 298 transitions, 1479 flow [2022-11-20 12:09:44,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1479, PETRI_PLACES=344, PETRI_TRANSITIONS=298} [2022-11-20 12:09:44,520 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 138 predicate places. [2022-11-20 12:09:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 298 transitions, 1479 flow [2022-11-20 12:09:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:44,522 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:44,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:44,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:44,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash 8238113, now seen corresponding path program 1 times [2022-11-20 12:09:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:44,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039614837] [2022-11-20 12:09:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:44,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:44,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:44,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571401306] [2022-11-20 12:09:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:44,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:44,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:44,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:09:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:46,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 5185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:09:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-20 12:09:48,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-20 12:09:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:50,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039614837] [2022-11-20 12:09:50,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:09:50,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571401306] [2022-11-20 12:09:50,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571401306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:09:50,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:50,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:09:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986760739] [2022-11-20 12:09:50,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:09:50,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:09:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:09:51,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-20 12:09:51,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 298 transitions, 1479 flow. Second operand has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:51,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:51,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-20 12:09:51,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:53,876 INFO L130 PetriNetUnfolder]: 7/4005 cut-off events. [2022-11-20 12:09:53,876 INFO L131 PetriNetUnfolder]: For 4610/4611 co-relation queries the response was YES. [2022-11-20 12:09:53,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 4005 events. 7/4005 cut-off events. For 4610/4611 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 515 event pairs, 0 based on Foata normal form. 3/3995 useless extension candidates. Maximal degree in co-relation 6367. Up to 187 conditions per place. [2022-11-20 12:09:53,891 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 38 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-11-20 12:09:53,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 322 transitions, 1635 flow [2022-11-20 12:09:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:09:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:09:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-20 12:09:53,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495875788452207 [2022-11-20 12:09:53,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-20 12:09:53,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-20 12:09:53,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:53,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-20 12:09:53,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:53,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:53,903 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:53,903 INFO L175 Difference]: Start difference. First operand has 344 places, 298 transitions, 1479 flow. Second operand 9 states and 1751 transitions. [2022-11-20 12:09:53,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 322 transitions, 1635 flow [2022-11-20 12:09:53,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 322 transitions, 1629 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:09:53,937 INFO L231 Difference]: Finished difference. Result has 354 places, 302 transitions, 1529 flow [2022-11-20 12:09:53,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=354, PETRI_TRANSITIONS=302} [2022-11-20 12:09:53,938 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 148 predicate places. [2022-11-20 12:09:53,939 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 302 transitions, 1529 flow [2022-11-20 12:09:53,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:53,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:53,940 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:53,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:09:54,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:09:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash 873223304, now seen corresponding path program 1 times [2022-11-20 12:09:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:54,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347950503] [2022-11-20 12:09:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:54,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:09:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870359157] [2022-11-20 12:09:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:54,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:54,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:54,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:10:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:03,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:10:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 12:10:05,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 12:10:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347950503] [2022-11-20 12:10:08,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:10:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870359157] [2022-11-20 12:10:08,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870359157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:08,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:08,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:10:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245254706] [2022-11-20 12:10:08,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:10:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:10:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:10:08,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-20 12:10:08,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 302 transitions, 1529 flow. Second operand has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:08,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:08,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-20 12:10:08,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:12,627 INFO L130 PetriNetUnfolder]: 7/3973 cut-off events. [2022-11-20 12:10:12,627 INFO L131 PetriNetUnfolder]: For 4797/4798 co-relation queries the response was YES. [2022-11-20 12:10:12,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 3973 events. 7/3973 cut-off events. For 4797/4798 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 32/3992 useless extension candidates. Maximal degree in co-relation 6810. Up to 307 conditions per place. [2022-11-20 12:10:12,641 INFO L137 encePairwiseOnDemand]: 215/229 looper letters, 224 selfloop transitions, 144 changer transitions 0/542 dead transitions. [2022-11-20 12:10:12,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 542 transitions, 4389 flow [2022-11-20 12:10:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:10:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 12:10:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4399 transitions. [2022-11-20 12:10:12,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8004002911208151 [2022-11-20 12:10:12,647 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4399 transitions. [2022-11-20 12:10:12,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4399 transitions. [2022-11-20 12:10:12,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:12,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4399 transitions. [2022-11-20 12:10:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 183.29166666666666) internal successors, (4399), 24 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:12,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:12,663 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:12,663 INFO L175 Difference]: Start difference. First operand has 354 places, 302 transitions, 1529 flow. Second operand 24 states and 4399 transitions. [2022-11-20 12:10:12,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 542 transitions, 4389 flow [2022-11-20 12:10:12,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 542 transitions, 4373 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 12:10:12,706 INFO L231 Difference]: Finished difference. Result has 378 places, 433 transitions, 3568 flow [2022-11-20 12:10:12,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3568, PETRI_PLACES=378, PETRI_TRANSITIONS=433} [2022-11-20 12:10:12,707 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 172 predicate places. [2022-11-20 12:10:12,707 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 433 transitions, 3568 flow [2022-11-20 12:10:12,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:12,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:12,709 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:12,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 12:10:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:10:12,909 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:10:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -104876832, now seen corresponding path program 1 times [2022-11-20 12:10:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:12,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295414874] [2022-11-20 12:10:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:13,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:10:13,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451178813] [2022-11-20 12:10:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:13,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:13,119 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:13,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:10:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:22,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:10:22,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 12:10:25,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:25,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295414874] [2022-11-20 12:10:25,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:10:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451178813] [2022-11-20 12:10:25,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451178813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:25,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:25,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:10:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50160263] [2022-11-20 12:10:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:25,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:10:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:10:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:10:25,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-20 12:10:25,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 433 transitions, 3568 flow. Second operand has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:25,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:25,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-20 12:10:25,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:29,338 INFO L130 PetriNetUnfolder]: 7/3916 cut-off events. [2022-11-20 12:10:29,338 INFO L131 PetriNetUnfolder]: For 7135/7136 co-relation queries the response was YES. [2022-11-20 12:10:29,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 3916 events. 7/3916 cut-off events. For 7135/7136 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 254 event pairs, 0 based on Foata normal form. 57/3960 useless extension candidates. Maximal degree in co-relation 7276. Up to 370 conditions per place. [2022-11-20 12:10:29,360 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 208 selfloop transitions, 139 changer transitions 0/521 dead transitions. [2022-11-20 12:10:29,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 521 transitions, 5044 flow [2022-11-20 12:10:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:10:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:10:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2751 transitions. [2022-11-20 12:10:29,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008733624454148 [2022-11-20 12:10:29,373 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2751 transitions. [2022-11-20 12:10:29,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2751 transitions. [2022-11-20 12:10:29,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:29,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2751 transitions. [2022-11-20 12:10:29,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:29,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:29,392 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:29,393 INFO L175 Difference]: Start difference. First operand has 378 places, 433 transitions, 3568 flow. Second operand 15 states and 2751 transitions. [2022-11-20 12:10:29,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 521 transitions, 5044 flow [2022-11-20 12:10:29,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 521 transitions, 5012 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-20 12:10:29,466 INFO L231 Difference]: Finished difference. Result has 385 places, 490 transitions, 4747 flow [2022-11-20 12:10:29,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4747, PETRI_PLACES=385, PETRI_TRANSITIONS=490} [2022-11-20 12:10:29,468 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 179 predicate places. [2022-11-20 12:10:29,468 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 490 transitions, 4747 flow [2022-11-20 12:10:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:29,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:29,471 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:29,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:10:29,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:10:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1118530061, now seen corresponding path program 2 times [2022-11-20 12:10:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:29,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329928140] [2022-11-20 12:10:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:30,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:10:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325943141] [2022-11-20 12:10:30,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:30,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:30,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:11:25,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:11:25,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:25,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 10558 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:11:25,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 0 proven. 42087 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 12:11:29,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 0 proven. 5091 refuted. 36996 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 12:14:09,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:09,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329928140] [2022-11-20 12:14:09,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:14:09,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325943141] [2022-11-20 12:14:09,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325943141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:09,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:09,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 12:14:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476929902] [2022-11-20 12:14:09,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:14:09,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:14:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=354, Unknown=8, NotChecked=0, Total=462 [2022-11-20 12:14:09,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-20 12:14:09,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 490 transitions, 4747 flow. Second operand has 22 states, 22 states have (on average 185.13636363636363) internal successors, (4073), 22 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:09,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:14:09,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-20 12:14:09,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:14:54,636 INFO L130 PetriNetUnfolder]: 12/7736 cut-off events. [2022-11-20 12:14:54,636 INFO L131 PetriNetUnfolder]: For 17629/17630 co-relation queries the response was YES. [2022-11-20 12:14:54,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15747 conditions, 7736 events. 12/7736 cut-off events. For 17629/17630 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 572 event pairs, 0 based on Foata normal form. 5/7728 useless extension candidates. Maximal degree in co-relation 15567. Up to 347 conditions per place. [2022-11-20 12:14:54,665 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 703 selfloop transitions, 53 changer transitions 0/930 dead transitions. [2022-11-20 12:14:54,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 930 transitions, 11497 flow [2022-11-20 12:14:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:14:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 12:14:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 8835 transitions. [2022-11-20 12:14:54,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8037663755458515 [2022-11-20 12:14:54,678 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 8835 transitions. [2022-11-20 12:14:54,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 8835 transitions. [2022-11-20 12:14:54,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:14:54,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 8835 transitions. [2022-11-20 12:14:54,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 184.0625) internal successors, (8835), 48 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:54,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 229.0) internal successors, (11221), 49 states have internal predecessors, (11221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:54,712 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 229.0) internal successors, (11221), 49 states have internal predecessors, (11221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:54,712 INFO L175 Difference]: Start difference. First operand has 385 places, 490 transitions, 4747 flow. Second operand 48 states and 8835 transitions. [2022-11-20 12:14:54,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 930 transitions, 11497 flow [2022-11-20 12:14:54,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 930 transitions, 11325 flow, removed 58 selfloop flow, removed 8 redundant places. [2022-11-20 12:14:54,823 INFO L231 Difference]: Finished difference. Result has 437 places, 531 transitions, 5161 flow [2022-11-20 12:14:54,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=4604, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5161, PETRI_PLACES=437, PETRI_TRANSITIONS=531} [2022-11-20 12:14:54,824 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 231 predicate places. [2022-11-20 12:14:54,825 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 531 transitions, 5161 flow [2022-11-20 12:14:54,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 185.13636363636363) internal successors, (4073), 22 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:54,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:14:54,826 INFO L209 CegarLoopForPetriNet]: trace histogram [66, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:55,047 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-20 12:14:55,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:14:55,068 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:14:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash -605037249, now seen corresponding path program 3 times [2022-11-20 12:14:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:55,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769101844] [2022-11-20 12:14:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:55,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:14:55,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428965777] [2022-11-20 12:14:55,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:14:55,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:55,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:55,431 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:14:57,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:14:57,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:57,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:14:57,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 85578 backedges. 12616 proven. 0 refuted. 0 times theorem prover too weak. 72962 trivial. 0 not checked. [2022-11-20 12:14:59,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:59,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769101844] [2022-11-20 12:14:59,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:14:59,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428965777] [2022-11-20 12:14:59,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428965777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:59,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:59,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487260595] [2022-11-20 12:14:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:59,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:14:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:14:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:59,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 229 [2022-11-20 12:14:59,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 531 transitions, 5161 flow. Second operand has 7 states, 7 states have (on average 190.28571428571428) internal successors, (1332), 7 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:59,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:14:59,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 229 [2022-11-20 12:14:59,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:10,565 INFO L130 PetriNetUnfolder]: 12/7629 cut-off events. [2022-11-20 12:15:10,566 INFO L131 PetriNetUnfolder]: For 22455/22456 co-relation queries the response was YES. [2022-11-20 12:15:10,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15408 conditions, 7629 events. 12/7629 cut-off events. For 22455/22456 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 466 event pairs, 0 based on Foata normal form. 107/7723 useless extension candidates. Maximal degree in co-relation 15215. Up to 876 conditions per place. [2022-11-20 12:15:10,596 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 136 selfloop transitions, 220 changer transitions 0/538 dead transitions. [2022-11-20 12:15:10,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 538 transitions, 5875 flow [2022-11-20 12:15:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:15:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1690 transitions. [2022-11-20 12:15:10,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8199902959728287 [2022-11-20 12:15:10,599 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1690 transitions. [2022-11-20 12:15:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1690 transitions. [2022-11-20 12:15:10,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:10,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1690 transitions. [2022-11-20 12:15:10,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.77777777777777) internal successors, (1690), 9 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:10,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:10,605 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:10,605 INFO L175 Difference]: Start difference. First operand has 437 places, 531 transitions, 5161 flow. Second operand 9 states and 1690 transitions. [2022-11-20 12:15:10,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 538 transitions, 5875 flow [2022-11-20 12:15:10,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 538 transitions, 5763 flow, removed 22 selfloop flow, removed 14 redundant places. [2022-11-20 12:15:10,714 INFO L231 Difference]: Finished difference. Result has 431 places, 532 transitions, 5588 flow [2022-11-20 12:15:10,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5588, PETRI_PLACES=431, PETRI_TRANSITIONS=532} [2022-11-20 12:15:10,716 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 225 predicate places. [2022-11-20 12:15:10,716 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 532 transitions, 5588 flow [2022-11-20 12:15:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.28571428571428) internal successors, (1332), 7 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:10,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:10,717 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:10,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:15:10,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:15:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash -114332109, now seen corresponding path program 2 times [2022-11-20 12:15:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:10,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312052842] [2022-11-20 12:15:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:11,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607952050] [2022-11-20 12:15:11,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:11,595 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:11,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:15:16,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:16,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:16,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 15305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:15:16,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-20 12:15:22,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-20 12:15:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312052842] [2022-11-20 12:15:32,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607952050] [2022-11-20 12:15:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607952050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:32,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:32,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:15:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933447439] [2022-11-20 12:15:32,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:32,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:15:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:15:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:15:32,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-20 12:15:32,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 532 transitions, 5588 flow. Second operand has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:32,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:32,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-20 12:15:32,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:45,880 INFO L130 PetriNetUnfolder]: 11/8876 cut-off events. [2022-11-20 12:15:45,880 INFO L131 PetriNetUnfolder]: For 25845/25846 co-relation queries the response was YES. [2022-11-20 12:15:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17625 conditions, 8876 events. 11/8876 cut-off events. For 25845/25846 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 4/8867 useless extension candidates. Maximal degree in co-relation 17435. Up to 336 conditions per place. [2022-11-20 12:15:45,912 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 78 selfloop transitions, 21 changer transitions 0/590 dead transitions. [2022-11-20 12:15:45,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 590 transitions, 6047 flow [2022-11-20 12:15:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:15:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:15:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4063 transitions. [2022-11-20 12:15:45,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448741942191724 [2022-11-20 12:15:45,918 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4063 transitions. [2022-11-20 12:15:45,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4063 transitions. [2022-11-20 12:15:45,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:45,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4063 transitions. [2022-11-20 12:15:45,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.47619047619048) internal successors, (4063), 21 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:45,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:45,931 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:45,932 INFO L175 Difference]: Start difference. First operand has 431 places, 532 transitions, 5588 flow. Second operand 21 states and 4063 transitions. [2022-11-20 12:15:45,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 590 transitions, 6047 flow [2022-11-20 12:15:46,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 590 transitions, 5800 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:15:46,068 INFO L231 Difference]: Finished difference. Result has 448 places, 536 transitions, 5454 flow [2022-11-20 12:15:46,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5454, PETRI_PLACES=448, PETRI_TRANSITIONS=536} [2022-11-20 12:15:46,069 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 242 predicate places. [2022-11-20 12:15:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 536 transitions, 5454 flow [2022-11-20 12:15:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:46,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:46,073 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:46,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:46,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 12:15:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1767105193, now seen corresponding path program 3 times [2022-11-20 12:15:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:46,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554077236] [2022-11-20 12:15:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:47,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:47,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647918998] [2022-11-20 12:15:47,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:15:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:47,492 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:47,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74cf924-80b9-439a-8352-4040c7c113b2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process